Dresden 2011 – scientific programme

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A: Fachverband Atomphysik

A 21: Atomic systems in external fields II

A 21.3: Talk

Thursday, March 17, 2011, 14:30–14:45, BAR 205

Single Atom Interferometer with Spatial Separation — •Andreas Steffen, Noomen Belmechri, Michal Karski, Kohei Katayama, Sebastian Hild, Andrea Alberti, Wolfgang Alt, Artur Widera, and Dieter Meschede — Institut für angewandte Physik, Universität Bonn

We demonstrate a single atom interferometer (SAI) consisting of a Cs atom being split by multiple sites in a 1D optical lattice. State-dependent dipole potentials controlled by the lattice polarization allow coherent division and recombination over up to 11 sites. The two spatially separated states of the SAI accumulate phase from spatial potential differences, making the SAI sensitive to magnetic field gradients or acceleration. We have characterized the phase stability of the interferometer and its sensitivity to potential gradients. In the future, collisional phases and two-atom entanglement shall be measured using this setup.